Mercurial > hg > truffle
annotate src/share/vm/runtime/atomic.cpp @ 14680:2dfa56e10640
8027124: [TESTBUG] NonTieredLevelsTest: java.lang.RuntimeException: private TestCase$Helper(java.lang.Object) must be osr_compiled
Reviewed-by: kvn, roland
author | iignatyev |
---|---|
date | Thu, 06 Mar 2014 12:47:45 +0400 |
parents | abec000618bf |
children | 4ca6dc0799b6 |
rev | line source |
---|---|
0 | 1 /* |
14223
de6a9e811145
8029233: Update copyright year to match last edit in jdk8 hotspot repository for 2013
mikael
parents:
11033
diff
changeset
|
2 * Copyright (c) 2001, 2013, Oracle and/or its affiliates. All rights reserved. |
0 | 3 * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER. |
4 * | |
5 * This code is free software; you can redistribute it and/or modify it | |
6 * under the terms of the GNU General Public License version 2 only, as | |
7 * published by the Free Software Foundation. | |
8 * | |
9 * This code is distributed in the hope that it will be useful, but WITHOUT | |
10 * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or | |
11 * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License | |
12 * version 2 for more details (a copy is included in the LICENSE file that | |
13 * accompanied this code). | |
14 * | |
15 * You should have received a copy of the GNU General Public License version | |
16 * 2 along with this work; if not, write to the Free Software Foundation, | |
17 * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA. | |
18 * | |
1552
c18cbe5936b8
6941466: Oracle rebranding changes for Hotspot repositories
trims
parents:
196
diff
changeset
|
19 * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA |
c18cbe5936b8
6941466: Oracle rebranding changes for Hotspot repositories
trims
parents:
196
diff
changeset
|
20 * or visit www.oracle.com if you need additional information or have any |
c18cbe5936b8
6941466: Oracle rebranding changes for Hotspot repositories
trims
parents:
196
diff
changeset
|
21 * questions. |
0 | 22 * |
23 */ | |
24 | |
1972 | 25 #include "precompiled.hpp" |
26 #include "runtime/atomic.hpp" | |
27 #ifdef TARGET_OS_FAMILY_linux | |
28 # include "os_linux.inline.hpp" | |
29 #endif | |
30 #ifdef TARGET_OS_FAMILY_solaris | |
31 # include "os_solaris.inline.hpp" | |
32 #endif | |
33 #ifdef TARGET_OS_FAMILY_windows | |
34 # include "os_windows.inline.hpp" | |
35 #endif | |
14411 | 36 #ifdef TARGET_OS_FAMILY_aix |
37 # include "os_aix.inline.hpp" | |
38 #endif | |
3960 | 39 #ifdef TARGET_OS_FAMILY_bsd |
40 # include "os_bsd.inline.hpp" | |
41 #endif | |
7199
cd3d6a6b95d9
8003240: x86: move MacroAssembler into separate file
twisti
parents:
3960
diff
changeset
|
42 |
cd3d6a6b95d9
8003240: x86: move MacroAssembler into separate file
twisti
parents:
3960
diff
changeset
|
43 #include "runtime/atomic.inline.hpp" |
0 | 44 |
45 jbyte Atomic::cmpxchg(jbyte exchange_value, volatile jbyte* dest, jbyte compare_value) { | |
46 assert(sizeof(jbyte) == 1, "assumption."); | |
47 uintptr_t dest_addr = (uintptr_t)dest; | |
48 uintptr_t offset = dest_addr % sizeof(jint); | |
49 volatile jint* dest_int = (volatile jint*)(dest_addr - offset); | |
50 jint cur = *dest_int; | |
51 jbyte* cur_as_bytes = (jbyte*)(&cur); | |
52 jint new_val = cur; | |
53 jbyte* new_val_as_bytes = (jbyte*)(&new_val); | |
54 new_val_as_bytes[offset] = exchange_value; | |
55 while (cur_as_bytes[offset] == compare_value) { | |
56 jint res = cmpxchg(new_val, dest_int, cur); | |
57 if (res == cur) break; | |
58 cur = res; | |
59 new_val = cur; | |
60 new_val_as_bytes[offset] = exchange_value; | |
61 } | |
62 return cur_as_bytes[offset]; | |
63 } | |
113
ba764ed4b6f2
6420645: Create a vm that uses compressed oops for up to 32gb heapsizes
coleenp
parents:
0
diff
changeset
|
64 |
ba764ed4b6f2
6420645: Create a vm that uses compressed oops for up to 32gb heapsizes
coleenp
parents:
0
diff
changeset
|
65 unsigned Atomic::xchg(unsigned int exchange_value, volatile unsigned int* dest) { |
ba764ed4b6f2
6420645: Create a vm that uses compressed oops for up to 32gb heapsizes
coleenp
parents:
0
diff
changeset
|
66 assert(sizeof(unsigned int) == sizeof(jint), "more work to do"); |
ba764ed4b6f2
6420645: Create a vm that uses compressed oops for up to 32gb heapsizes
coleenp
parents:
0
diff
changeset
|
67 return (unsigned int)Atomic::xchg((jint)exchange_value, (volatile jint*)dest); |
ba764ed4b6f2
6420645: Create a vm that uses compressed oops for up to 32gb heapsizes
coleenp
parents:
0
diff
changeset
|
68 } |
ba764ed4b6f2
6420645: Create a vm that uses compressed oops for up to 32gb heapsizes
coleenp
parents:
0
diff
changeset
|
69 |
ba764ed4b6f2
6420645: Create a vm that uses compressed oops for up to 32gb heapsizes
coleenp
parents:
0
diff
changeset
|
70 unsigned Atomic::cmpxchg(unsigned int exchange_value, |
ba764ed4b6f2
6420645: Create a vm that uses compressed oops for up to 32gb heapsizes
coleenp
parents:
0
diff
changeset
|
71 volatile unsigned int* dest, unsigned int compare_value) { |
ba764ed4b6f2
6420645: Create a vm that uses compressed oops for up to 32gb heapsizes
coleenp
parents:
0
diff
changeset
|
72 assert(sizeof(unsigned int) == sizeof(jint), "more work to do"); |
ba764ed4b6f2
6420645: Create a vm that uses compressed oops for up to 32gb heapsizes
coleenp
parents:
0
diff
changeset
|
73 return (unsigned int)Atomic::cmpxchg((jint)exchange_value, (volatile jint*)dest, |
ba764ed4b6f2
6420645: Create a vm that uses compressed oops for up to 32gb heapsizes
coleenp
parents:
0
diff
changeset
|
74 (jint)compare_value); |
ba764ed4b6f2
6420645: Create a vm that uses compressed oops for up to 32gb heapsizes
coleenp
parents:
0
diff
changeset
|
75 } |
3767
2a241e764894
6941923: RFE: Handling large log files produced by long running Java Applications
minqi
parents:
1972
diff
changeset
|
76 |
2a241e764894
6941923: RFE: Handling large log files produced by long running Java Applications
minqi
parents:
1972
diff
changeset
|
77 jlong Atomic::add(jlong add_value, volatile jlong* dest) { |
2a241e764894
6941923: RFE: Handling large log files produced by long running Java Applications
minqi
parents:
1972
diff
changeset
|
78 jlong old = load(dest); |
2a241e764894
6941923: RFE: Handling large log files produced by long running Java Applications
minqi
parents:
1972
diff
changeset
|
79 jlong new_value = old + add_value; |
2a241e764894
6941923: RFE: Handling large log files produced by long running Java Applications
minqi
parents:
1972
diff
changeset
|
80 while (old != cmpxchg(new_value, dest, old)) { |
2a241e764894
6941923: RFE: Handling large log files produced by long running Java Applications
minqi
parents:
1972
diff
changeset
|
81 old = load(dest); |
2a241e764894
6941923: RFE: Handling large log files produced by long running Java Applications
minqi
parents:
1972
diff
changeset
|
82 new_value = old + add_value; |
2a241e764894
6941923: RFE: Handling large log files produced by long running Java Applications
minqi
parents:
1972
diff
changeset
|
83 } |
2a241e764894
6941923: RFE: Handling large log files produced by long running Java Applications
minqi
parents:
1972
diff
changeset
|
84 return old; |
2a241e764894
6941923: RFE: Handling large log files produced by long running Java Applications
minqi
parents:
1972
diff
changeset
|
85 } |
11033
d9eed26d638a
8009575: Reduce Symbol::_refcount from 4 bytes to 2 bytes
iklam
parents:
7199
diff
changeset
|
86 |
d9eed26d638a
8009575: Reduce Symbol::_refcount from 4 bytes to 2 bytes
iklam
parents:
7199
diff
changeset
|
87 void Atomic::inc(volatile short* dest) { |
d9eed26d638a
8009575: Reduce Symbol::_refcount from 4 bytes to 2 bytes
iklam
parents:
7199
diff
changeset
|
88 // Most platforms do not support atomic increment on a 2-byte value. However, |
d9eed26d638a
8009575: Reduce Symbol::_refcount from 4 bytes to 2 bytes
iklam
parents:
7199
diff
changeset
|
89 // if the value occupies the most significant 16 bits of an aligned 32-bit |
d9eed26d638a
8009575: Reduce Symbol::_refcount from 4 bytes to 2 bytes
iklam
parents:
7199
diff
changeset
|
90 // word, then we can do this with an atomic add of 0x10000 to the 32-bit word. |
d9eed26d638a
8009575: Reduce Symbol::_refcount from 4 bytes to 2 bytes
iklam
parents:
7199
diff
changeset
|
91 // |
d9eed26d638a
8009575: Reduce Symbol::_refcount from 4 bytes to 2 bytes
iklam
parents:
7199
diff
changeset
|
92 // The least significant parts of this 32-bit word will never be affected, even |
d9eed26d638a
8009575: Reduce Symbol::_refcount from 4 bytes to 2 bytes
iklam
parents:
7199
diff
changeset
|
93 // in case of overflow/underflow. |
d9eed26d638a
8009575: Reduce Symbol::_refcount from 4 bytes to 2 bytes
iklam
parents:
7199
diff
changeset
|
94 // |
d9eed26d638a
8009575: Reduce Symbol::_refcount from 4 bytes to 2 bytes
iklam
parents:
7199
diff
changeset
|
95 // Use the ATOMIC_SHORT_PAIR macro to get the desired alignment. |
d9eed26d638a
8009575: Reduce Symbol::_refcount from 4 bytes to 2 bytes
iklam
parents:
7199
diff
changeset
|
96 #ifdef VM_LITTLE_ENDIAN |
d9eed26d638a
8009575: Reduce Symbol::_refcount from 4 bytes to 2 bytes
iklam
parents:
7199
diff
changeset
|
97 assert((intx(dest) & 0x03) == 0x02, "wrong alignment"); |
d9eed26d638a
8009575: Reduce Symbol::_refcount from 4 bytes to 2 bytes
iklam
parents:
7199
diff
changeset
|
98 (void)Atomic::add(0x10000, (volatile int*)(dest-1)); |
d9eed26d638a
8009575: Reduce Symbol::_refcount from 4 bytes to 2 bytes
iklam
parents:
7199
diff
changeset
|
99 #else |
d9eed26d638a
8009575: Reduce Symbol::_refcount from 4 bytes to 2 bytes
iklam
parents:
7199
diff
changeset
|
100 assert((intx(dest) & 0x03) == 0x00, "wrong alignment"); |
d9eed26d638a
8009575: Reduce Symbol::_refcount from 4 bytes to 2 bytes
iklam
parents:
7199
diff
changeset
|
101 (void)Atomic::add(0x10000, (volatile int*)(dest)); |
d9eed26d638a
8009575: Reduce Symbol::_refcount from 4 bytes to 2 bytes
iklam
parents:
7199
diff
changeset
|
102 #endif |
d9eed26d638a
8009575: Reduce Symbol::_refcount from 4 bytes to 2 bytes
iklam
parents:
7199
diff
changeset
|
103 } |
d9eed26d638a
8009575: Reduce Symbol::_refcount from 4 bytes to 2 bytes
iklam
parents:
7199
diff
changeset
|
104 |
d9eed26d638a
8009575: Reduce Symbol::_refcount from 4 bytes to 2 bytes
iklam
parents:
7199
diff
changeset
|
105 void Atomic::dec(volatile short* dest) { |
d9eed26d638a
8009575: Reduce Symbol::_refcount from 4 bytes to 2 bytes
iklam
parents:
7199
diff
changeset
|
106 #ifdef VM_LITTLE_ENDIAN |
d9eed26d638a
8009575: Reduce Symbol::_refcount from 4 bytes to 2 bytes
iklam
parents:
7199
diff
changeset
|
107 assert((intx(dest) & 0x03) == 0x02, "wrong alignment"); |
d9eed26d638a
8009575: Reduce Symbol::_refcount from 4 bytes to 2 bytes
iklam
parents:
7199
diff
changeset
|
108 (void)Atomic::add(-0x10000, (volatile int*)(dest-1)); |
d9eed26d638a
8009575: Reduce Symbol::_refcount from 4 bytes to 2 bytes
iklam
parents:
7199
diff
changeset
|
109 #else |
d9eed26d638a
8009575: Reduce Symbol::_refcount from 4 bytes to 2 bytes
iklam
parents:
7199
diff
changeset
|
110 assert((intx(dest) & 0x03) == 0x00, "wrong alignment"); |
d9eed26d638a
8009575: Reduce Symbol::_refcount from 4 bytes to 2 bytes
iklam
parents:
7199
diff
changeset
|
111 (void)Atomic::add(-0x10000, (volatile int*)(dest)); |
d9eed26d638a
8009575: Reduce Symbol::_refcount from 4 bytes to 2 bytes
iklam
parents:
7199
diff
changeset
|
112 #endif |
d9eed26d638a
8009575: Reduce Symbol::_refcount from 4 bytes to 2 bytes
iklam
parents:
7199
diff
changeset
|
113 } |
d9eed26d638a
8009575: Reduce Symbol::_refcount from 4 bytes to 2 bytes
iklam
parents:
7199
diff
changeset
|
114 |